<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:swe="http://www.opengis.net/swe/1.0" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml" targetNamespace="http://www.opengis.net/swe/1.0" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0.0">
	<xs:annotation>
		<xs:documentation>basicTypes.xsd

Some basic types (simpleContent) required in various places in OWS Sensor Web application schemas

Copyright (c) 2007 Open Geospatial Consortium - see http://www.opengeospatial.org/about/?page=ipr</xs:documentation>
	</xs:annotation>
	<!-- ====================================================================== -->
	<xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="../../xlink/1.0.0/xlinks.xsd"/>
	<xs:import namespace="http://www.opengis.net/gml" schemaLocation="../../gml/3.1.1/base/gml.xsd"/>
	<!-- ====================================================================== -->
	<!-- === Units of Measure === -->
	<!-- ====================================================================== -->
	<xs:simpleType name="UomSymbol">
		<xs:annotation>
			<xs:documentation>Local copy of GML 3.2 uom symbol definition
			Included for forward compatibility. 
			Note: in future of this specification based on GML 3.2, these will be removed in favour of the GML 3.2 implementation</xs:documentation>
		</xs:annotation>
		<xs:restriction base="xs:string">
			<xs:pattern value="[^: \n\r\t]+"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="UomURI">
		<xs:annotation>
			<xs:documentation>Local copy of GML 3.2 uom URI definition</xs:documentation>
		</xs:annotation>
		<xs:restriction base="xs:anyURI">
			<xs:pattern value="([a-zA-Z][a-zA-Z0-9\-\+\.]*:|\.\./|\./|#).*"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="UomIdentifier">
		<xs:annotation>
			<xs:documentation>Local copy of GML 3.2 uom identifier definition</xs:documentation>
		</xs:annotation>
		<xs:union memberTypes="swe:UomSymbol swe:UomURI"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:complexType name="UomPropertyType">
		<xs:annotation>
			<xs:documentation>Property type that indicates unit-of-measure, either by (i) inline definition; (ii)  reference; (iii)  UCUM code</xs:documentation>
		</xs:annotation>
		<xs:sequence minOccurs="0">
			<xs:element ref="gml:UnitDefinition">
				<xs:annotation>
					<xs:documentation>Defines a unit inline</xs:documentation>
				</xs:annotation>
			</xs:element>
		</xs:sequence>
		<xs:attribute name="code" type="swe:UomSymbol">
			<xs:annotation>
				<xs:documentation>Specifies a unit by using a UCUM expression (prefered)</xs:documentation>
			</xs:annotation>
		</xs:attribute>
		<xs:attributeGroup ref="gml:AssociationAttributeGroup">
			<xs:annotation>
				<xs:documentation>Specifies a unit by referencing a dictionary entry (to be used only for units not defined in UCUM)</xs:documentation>
			</xs:annotation>
		</xs:attributeGroup>
	</xs:complexType>
	<!-- ====================================================================== -->
	<!-- === Code space/vocabulary === -->
	<!-- ====================================================================== -->
   <xs:complexType name="CodeSpacePropertyType">
      <xs:annotation>
         <xs:documentation>Property type that indicates the codespace</xs:documentation>
      </xs:annotation>
      <xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
   </xs:complexType>
	<!-- ====================================================================== -->
	<!-- === Time position === -->
	<!-- overlaps with GML TimePositionType -->
	<!-- ====================================================================== -->
	<xs:simpleType name="timeIso8601">
		<xs:annotation>
			<xs:documentation>Choice of time position encodings, not including numeric representation. 
	      A minor variation on gml:TimePositionUnion - carrying "indeterminate value" as content instead of an attribute.</xs:documentation>
		</xs:annotation>
		<xs:union memberTypes="xs:date xs:time xs:dateTime gml:TimeIndeterminateValueType"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="timePositionType">
		<xs:annotation>
			<xs:documentation>Choice of time position encodings, including numeric representation but no frame. 
	A minor variation on gml:TimePositionUnion - carrying "indeterminate value" as content instead of an attribute. </xs:documentation>
		</xs:annotation>
		<xs:union memberTypes="swe:timeIso8601 xs:double"/>
	</xs:simpleType>
	<!-- ====================================================================== -->
	<!-- === Scoped Name === -->
	<!-- equivalent to GML 3.2 CodeWithAuthorityType -->
	<!-- ====================================================================== -->
	<xs:complexType name="ScopedNameType">
		<xs:annotation>
			<xs:documentation>Explicit implementation of ISO 19103 ScopedName. 
			Extension of string which also carries a codeSpace attribute.
			Note: in future versions of this specification based on GML 3.2, this will be removed in favour of gml:CodeWithAuthorityType. </xs:documentation>
		</xs:annotation>
		<xs:simpleContent>
			<xs:extension base="xs:string">
				<xs:attribute name="codeSpace" type="xs:anyURI" use="required"/>
			</xs:extension>
		</xs:simpleContent>
	</xs:complexType>
	<!-- ====================================================================== -->
	<!-- === Lists === -->
	<!-- ================================================= -->
	<xs:simpleType name="decimalList">
		<xs:annotation>
			<xs:documentation>Simple list of double-precision numbers. 
	Note: xs:double supports either decimal or scientific notation</xs:documentation>
		</xs:annotation>
		<xs:list itemType="xs:double"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="decimalPair">
		<xs:annotation>
			<xs:documentation>Pair of double-precision numbers. 
	Note: xs:double supports either decimal or scientific notation</xs:documentation>
		</xs:annotation>
		<xs:restriction base="swe:decimalList">
			<xs:length value="2"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ================================================= -->
	<xs:simpleType name="countList">
		<xs:annotation>
			<xs:documentation>Simple list of integers. </xs:documentation>
		</xs:annotation>
		<xs:list itemType="xs:integer"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="countPair">
		<xs:annotation>
			<xs:documentation>Pair of integers. </xs:documentation>
		</xs:annotation>
		<xs:restriction base="swe:countList">
			<xs:length value="2"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ================================================= -->
	<xs:simpleType name="tokenList">
		<xs:annotation>
			<xs:documentation>Simple list of tokens. 
			Note: xs:token is a string with no embedded white-space allowed</xs:documentation>
		</xs:annotation>
		<xs:list itemType="xs:token"/>
	</xs:simpleType>
	<!-- ================================================= -->
	<xs:simpleType name="timeList">
		<xs:annotation>
			<xs:documentation>Simple list of time positions. </xs:documentation>
		</xs:annotation>
		<xs:list itemType="swe:timePositionType"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="timePair">
		<xs:annotation>
			<xs:documentation>Pair of time positions. </xs:documentation>
		</xs:annotation>
		<xs:restriction base="swe:timeList">
			<xs:length value="2"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ================================================= -->
	<!-- ===== Soft-typed values ====== -->
	<!-- ====================================================================== -->
	<xs:complexType name="TypedValueType">
		<xs:annotation>
			<xs:documentation>A generic soft-typed value</xs:documentation>
		</xs:annotation>
		<xs:sequence>
			<xs:element name="property" type="swe:ScopedNameType">
				<xs:annotation>
					<xs:documentation>This element attribute indicates the semantics of the typed value. 
					Usually identifies a property or phenomenon definition. </xs:documentation>
				</xs:annotation>
			</xs:element>
			<xs:element name="value">
				<xs:annotation>
					<xs:documentation>Implicit xs:anyType</xs:documentation>
				</xs:annotation>
			</xs:element>
		</xs:sequence>
	</xs:complexType>
	<!-- ................ -->
	<xs:element name="TypedValue" type="swe:TypedValueType">
		<xs:annotation>
			<xs:documentation>A generic soft-typed value</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ................ -->
	<xs:complexType name="TypedValuePropertyType">
		<xs:annotation>
			<xs:documentation>Inline property type for soft-typed values</xs:documentation>
		</xs:annotation>
		<xs:sequence>
			<xs:element ref="swe:TypedValue"/>
		</xs:sequence>
	</xs:complexType>
	<!-- ====================================================================== -->
	<xs:complexType name="TypedValueListType">
		<xs:annotation>
			<xs:documentation>A list of generic soft-typed values</xs:documentation>
		</xs:annotation>
		<xs:sequence>
			<xs:element name="property" type="swe:ScopedNameType">
				<xs:annotation>
					<xs:documentation>This element attribute indicates the semantics of the typed value. 
					Usually identifies a property or phenomenon definition. </xs:documentation>
				</xs:annotation>
			</xs:element>
			<xs:element name="value" maxOccurs="unbounded">
				<xs:annotation>
					<xs:documentation>Implicit xs:anyType</xs:documentation>
				</xs:annotation>
			</xs:element>
		</xs:sequence>
	</xs:complexType>
	<!-- ................ -->
	<xs:element name="TypedValueList" type="swe:TypedValueListType">
		<xs:annotation>
			<xs:documentation>A generic soft-typed list of values</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ................ -->
	<xs:complexType name="TypedValueListPropertyType">
		<xs:annotation>
			<xs:documentation>Inline property type for list of generic soft-typed values</xs:documentation>
		</xs:annotation>
		<xs:sequence>
			<xs:element ref="swe:TypedValueList"/>
		</xs:sequence>
	</xs:complexType>
	<!-- ====================================================================== -->
	<!-- === Generic Interval === -->
	<!-- ====================================================================== -->
	<xs:complexType name="IntervalType">
		<xs:annotation>
			<xs:documentation>A generic interval. The type of the two limits will normally be the same.</xs:documentation>
		</xs:annotation>
		<xs:sequence>
			<xs:element name="lowerBound">
				<xs:annotation>
					<xs:documentation>Implicit xs:anyType</xs:documentation>
				</xs:annotation>
			</xs:element>
			<xs:element name="upperBound">
				<xs:annotation>
					<xs:documentation>Implicit xs:anyType</xs:documentation>
				</xs:annotation>
			</xs:element>
		</xs:sequence>
	</xs:complexType>
	<!-- ................ -->
	<xs:element name="Interval" type="swe:IntervalType">
		<xs:annotation>
			<xs:documentation>A generic interval. The type of the two limits will normally be the same.</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ................ -->
	<xs:complexType name="IntervalPropertyType">
		<xs:annotation>
			<xs:documentation>Inline property type for generic intervals</xs:documentation>
		</xs:annotation>
		<xs:sequence>
			<xs:element ref="swe:Interval"/>
		</xs:sequence>
	</xs:complexType>
	<!-- ====================================================================== -->
</xs:schema>
